Vikings' Ponder out; Ravens' Dumervil listed as doubtful

Vikings quarterback Christian Ponder did not pass the NFL concussion protocol this week. He did not practice again on Friday and will be out of Sunday's contest against the Vikings.

Running back Adrian Peterson is listed as questionable (groin) after limited participation on Friday. Coach Leslie Frazier said Peterson wasn't running at full speed, but he was ramping up his activity for Sunday.

"No real need to burst or go 100 miles per hour today," Fraizer said. "But just something to make him feel comfortable about Sunday."

Ravens linebacker Elvis Dumervil (ankle) did not practice this week and listed as doubtful, but head coach John Harbaugh said he will be a game-time decision.

"Earlier in the week, we felt he was going to make it," Harbaugh said. "He’s not a guy that has to practice to play, so if he goes out there and feels like he can go, he will. If he doesn’t, he won't."